颌骨骨折常见的临床体征是()
A．咬合关系错乱
B．张口受限
C．骨折段活动异常
D．骨擦感
E．以上都是
参考答案：E
70吨货车（轴承型号353130B）运用轴承温升标准执行（）。
When the man came in, gun in hand, we all stood there, ____. [ ]
A. astonished
B. astonishing
C. being astonished
D. having astonished
